Perl Modules Missing or Unavailable for cPanel users after installing on CloudLinux with CageFS

Symptoms

When using Perl modules within a perl CGI script as a cPanel user, they cannot be loaded or found.

This happens after using the "Install a Perl Module" tool in WHM to install the Perl Module for use by cPanel users.

Description 

When using CageFS on CloudLinux, you must update the cage after installing new Perl Modules.

Resolution

1. Login to the server via SSH or Terminal as the root user

2. Start a screen session because the next step may take a long time to complete:

screen -S updateCageFS

3. Run the following command to update the cage:

cagefsctl --force-update

5. When the command has finished, type exit and press enter to close the screen session:

exit